CVE-2026-113395: medium-severity vulnerability in DrayTek Vigor2960
DrayTek Vigor2960 swmconfigupload mainfunction.cgi cgiEscape path traversal
Published
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 5.3epss 0.4%
exploitation probability
0.4%top 66% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
A security flaw has been discovered in DrayTek Vigor2960 1.5.1.6 Revision 8218. The affected element is the function cgiEscape of the file /cgi-bin/mainfunction.cgi of the component swmconfigupload. The manipulation of the argument multipart results in path traversal. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.5.1.7 is sufficient to fix this issue. The affected component should be upgraded. The vendor explains: "2960 1.5.1.7 has corrected many security issues. And 2960 is EoS with limited support, only major issues would be reviewed(e.g. unauthenticated vuln.)". This vulnerability only affects products that are no longer supported by the maintainer.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P
Affected products
DrayTek · Vigor2960public PoCs found — 1
cve_referencegithub.com/yikesoftware/DrayTek_Vigor2960_Security_Analysis/tree/main/cases/DRV2960-0012-authenticated-swmconfigupload-fieldname-path-traversal-clobberunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — DrayTek Vigor2960
In the same product, most dangerous first.
CVE-2024-12987MEDIUMDrayTek Vigor2960/Vigor300B Web Management Interface apmcfgupload os command injectionEPSS 98.2%KEVCVE-2024-12986MEDIUMDrayTek Vigor2960/Vigor300B Web Management Interface apmcfgupptim os command injectionEPSS 35.3%CVE-2026-113391CRITICALDrayTek Vigor2960 Upload Endpoint mainfunction.cgi uploadlangs command injectionEPSS 2.1%CVE-2026-113389CRITICALDrayTek Vigor2960 CGI Process mainfunction.cgi set_table command injectionEPSS 1.9%CVE-2026-113390CRITICALDrayTek Vigor2960 CGI mainfunction.cgi sub_182B0 os command injectionEPSS 1.9%CVE-2023-6265MEDIUMDrayTek Vigor2960 mainfunction.cgi dumpSyslog 'option' directory traversalEPSS 1.8%
References
https://fw.draytek.com.tw/Vigor2960/Firmware/v1.5.1.7/Vigor2960_v1.5.1.7.ziphttps://github.com/yikesoftware/DrayTek_Vigor2960_Security_Analysis/tree/main/cases/DRV2960-0012-authenticated-swmconfigupload-fieldname-path-traversal-clobberhttps://vuldb.com/cve/CVE-2026-113395https://vuldb.com/submit/992248https://vuldb.com/vuln/422671https://vuldb.com/vuln/422671/cti